class MoveBubble extends egret.Shape{
    constructor(){
        super();
        this.CreateMoveBubble();
    }
   private  Score:number=0;
    private CreateMoveBubble(){
        this.graphics.beginFill(0x33445577);
        this.graphics.drawCircle(0,0,50);
        this.graphics.endFill();
        this.addEventListener(egret.Event.ENTER_FRAME,enfun,this)
        function enfun(e:egret.Event){
            e.target.y+=5;
        }
    }
}